INTEGRATED CIRCUITS
74LVC1284
3.3V Parallel printer interface
transceiver/buffer
Product specification
IC24 Low Voltage Handbook
1995 Nov 10
Philips
Semiconductors
Philips Semiconductors
Product specification
3.3V Parallel printer interface transceiver/buffer
74LVC1284
FEATURES
•
Asynchronous operation
•
4-Bit transceivers
•
3 additional buffer/driver lines
•
TTL compatible inputs
•
ESD protection exceeds 1000V per MIL STD 883 Method 3015
and 200V per Machine Model
DESCRIPTION
The 74LVC1284 parallel interface chip is designed to provide an
asynchronous, 4-bit, bi-directional, parallel printer interface for
personal computers. Three additional lines are included to provide
handshaking signals between the host and the peripheral. The part
is designed to match IEEE 1284 standard.
The 4 transceiver pins (A/B 1-4) allow data transmission from the A
bus to the B bus, or from the B bus to the A bus, depending on the
state of the direction pin DIR.
The B bus and the Y5-Y7 lines have totem pole or open drain style
outputs depending on the state of the high drive enable pin HD.
The A bus only has totem pole style outputs. All inputs are TTL
compatible with at least 300mV of input hysteresis at V
CC
= 3.3V.
•
Input Hysteresis
•
Low Noise Operation
•
Center Pin V
CC
& GND
•
IEEE 1284 Compliant Level 1 & 2
•
Overvoltage Protection on B side
QUICK REFERENCE DATA
SYMBOL
R
D
SR
I
CC
V
HYS
t
PLH
/t
PHL
A –B/Y
PARAMETER
B/Y Side output resistance
B/Y Side slew rate
Total static current
Input hysteresis
Propagation delay
to the B/Y side outputs
CONDITIONS
T
amb
= 25°C; GND = 0V
V
CC
= 3.3V; V
O
= 1.65V
"0.2V
(See Figure 2)
R
L
= 62Ω; C
L
= 50pF (See Waveform 4)
V
I
= V
CC
/GND; I
O
= 0
V
CC
= 3.3V
V
CC
= 3.3V
TYPICAL
45
0.2
5
0.4
12.6/12.4
UNIT
Ω
V/ns
µA
V
ns
ORDERING INFORMATION
PACKAGES
20-pin plastic SO
20-pin plastic SSOP Type II
20-pin plastic TSSOP Type I
TEMPERATURE RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
ORDER CODE
7LVC1284 D
74LVC1284 DB
74LVC1284 PW
DRAWING NUMBER
SOT163-1
SOT339-1
SOT360-1
PIN CONFIGURATION
A1 1
A2
A3
A4
GND
GND
A5
A6
A7
2
3
4
5
6
7
8
9
20 B1
19 B2
18 B3
17 B4
16 V
CC
15 V
CC
14 Y5
13 Y6
12 Y7
11 HD
LOGIC SYMBOL
A1
A
B
B1
A2
A
B
B2
A3
A
B
B3
A4
A
B
B4
DIR 10
A5
A6
A7
DIR
A
A
A
Y
Y
Y
Y5
Y6
Y7
HD
SK00001
SK00009
1995 Nov 10
2
853-1819 16000
Philips Semiconductors
Product specification
3.3V Parallel printer interface transceiver/buffer
74LVC1284
PIN DESCRIPTION
PIN NUMBER
1,2,3,4
20,19,18,17
7,8,9
14,13,12
10
11
5,6
15,16
SYMBOL
A1 - A4
B1 - B4
A5 - A7
Y5 - Y7
DIR
HD
GND
V
CC
FUNCTION
Data inputs/outputs
IEEE 1284 Std.
outputs/inputs
Data inputs
IEEE 1284 Std. outputs
Direction selection
B/Y–side high drive
enable/disable
Ground (0V)
Positive supply voltage
FUNCTION TABLE
INPUTS
DIR
L
L
L
L
H
H
H
H
HD
L
L
H
H
L
L
H
H
A5-7
L
H
L
H
L
H
L
H
OUTPUTS
Y5-7
L
Z
L
H
L
Z
L
H
INPUTS/OUTPUTS
A1-4
A=B
A=B
A=B
A=B
Inputs Low
Inputs High
Inputs
Inputs
B1-4
Inputs
Inputs
Inputs
Inputs
Outputs Low
Outputs Z
B=A
B=A
H = High Voltage
L = Low Voltage
Z = High Impedance, Off-State
ABSOLUTE MAXIMUM RATINGS
1, 2
SYMBOL
V
CC
I
IK
I
OK
V
IN
V
OUT
B/Y
DC
V
OUT
B/Y (tr)
V
OUT
A side
I
O
T
stg
I
CC
/I
GND
PARAMETER
ESD Immunity, per Mil Std 883C method 3015
DC supply voltage
DC input diode current
DC output diode current
DC input voltage
3
DC output voltage on B/Y side
3
Transient output voltage on B/Y side
4
DC output voltage on A side
DC output current
Storage temperature range
Continuous current through V
CC
or GND
Outputs in High or Low state
40ns transient
V
I
< 0
V
O
< 0
CONDITIONS
RATING
"2
–0.5 to +4.6
"20
"50
–0.5 to +5.5
–0.5 to +5.5
–2 to +7
–0.5 to V
CC
+0.5
"50
–60 to +150
"200
UNIT
kV
V
mA
mA
V
V
V
V
mA
°C
mA
NOTES:
1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the
device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to
absolute-maximum-rated conditions for extended periods may affect device reliability.
2. The performance capability of a high-performance integrated circuit in conjunction with its thermal environment can create junction
temperatures which are detrimental to reliability. The maximum junction temperature of this integrated circuit should not exceed 150°C.
3. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
4. V
OUT
B/Y (tr) guarantees only that this part will not be damaged by reflections in application so long as the voltage levels remain in the
specified range.
RECOMMENDED OPERATING CONDITIONS
SYMBOL
V
CC
V
I
V
OUT
V
OUT
I
OH
I
OL
T
amb
DC supply voltage
Input voltage
B/Y output voltage
A side output voltage
B/Y side output current High
B/Y side output current Low
Operating free-air temperature range
0
PARAMETER
LIMITS
MIN
3.0
0
–0.5
0
MAX
3.6
V
CC
5.5
V
CC
–14
14
+70
UNIT
V
V
V
V
mA
mA
°C
1995 Nov 10
3
Philips Semiconductors
Product specification
3.3V Parallel printer interface transceiver/buffer
74LVC1284
DC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
V
OH
High level
High-level
out ut voltage
output
An
Bn or Yn
Low level
Low-level
output voltage
An
Bn or Yn
V
IH
V
IL
V
HYS
R
D
I
I
I
IHZ
/I
ILZ
I
OFF
I
OZH
I
OZL
I
IH
+I
OZH
I
IL
+I
OZL
I
CC
High-level input voltage
Low-level input voltage
Input Hysteresis
B/Y side Output
Impedance
Input leakage current
(A5-A7 DIR, HD)
Input current for common
I/O pins
B/Y Side Power-off
leakage current
3-State output High
current Yn
3-State output Low
current Yn
current (A1 – A4, Bn)
current (A1 – A4, Bn)
Quiescent Supply
Current
V
CC
= Min to Max; I
OH
= –50µA
V
CC
= 3.0V; I
OH
= –4mA
V
CC
= 3.0V; I
OH
= 14mA
V
CC
= Min to Max; I
OL
= 50µA;
V
I
= V
IL
or V
IH
V
CC
= 3.0V; I
OL
= 4mA; V
I
= V
IL
or V
IH
V
CC
= 3.0V; I
OL
= –14mA; V
I
= V
IL
or V
IH
V
CC
= Min to Max
V
CC
= Min to Max
V
CC
= 3.3V
See Figure 2
V
CC
= 3.6V; V
O
= V
CC
or GND;
Not for I/O pins
V
CC
= 3.6V;V
I
= 5.5V or GND
V
CC
= 0.0V; V
O
= 0 to 5.5V
V
CC
= 3.6V; V
O
= V
CC
; V
I
= V
IL
or V
IH
V
CC
= 3.6V; V
O
= GND; V
I
= V
IL
or V
IH
V
CC
= 3.6V; V
I/O
= V
CC
V
CC
= 3.6V; V
I/O
= GND
V
CC
= 3.6V; I
O
= 0; V
I
= GND or V
CC
5
"0.1
38
2.0
0.4
45
53
±1.0
"15
±10
5
–5
5
–5
10
±100
20
–20
25
–25
50
V
CC
–0.2
2.4
2.2
2.4
0.2
0.4
0.8
0.8
2.0
0.3
35
55
±5.0
V
Ω
µA
µA
µA
µA
µA
µA
µA
µA
T
amb
= 25°C
TYP
V
CC
MAX
T
amb
= 0°C to +70°C
MIN
V
CC
–0.2
2.4
2.1
0.2
0.4
0.9
0.8
MAX
V
V
V
V
V
V
UNIT
V
OL
AC CHARACTERISTICS
GND = 0V, t
R
= t
F
= 3.0ns, C
L
= 50pF, R
L
= 500Ω
LIMITS
SYMBOL
PARAMETER
WAVEFORM
MIN
SR
t
PLH
t
PHL
t
PLH
t
PHL
t
PZH
t
PHZ
t
PZL
t
PLZ
t
PZH
t
PZL
t
PHZ
t
PLZ
t
PZH
t
PZL
t
PHZ
t
PLZ
B-Side Slew Rate
Propagation delay
A toY or A to B
Propagation delay
B to A
Output enable/disable time to/from High level
HD to Y or HD to B
Output enable/disable time to/from Low level
A to Y or A to B
Output enable time
from DIR to B
Output disable time
from DIR to B
Output enable time
from DIR to A
Output disable
from DIR to A
4
5
1
2
2
2
2
2
2
0.05
6.0
6.0
1.5
1.5
4.0
2.0
5.0
1.5
8.0
8.0
5.0
6.0
3.5
4.0
2.5
2.5
T
amb
= 25°C
V
CC
= 3.3V
TYP
0.2
12.6
12.4
5.5
5.6
12.0
6.5
12.7
5.0
12.3
12.7
8.9
9.1
6.9
8.6
3.7
3.7
MAX
0.35
18.0
18.0
7.9
7.6
16.0
9.1
16.3
7.1
18.0
18.0
12.5
12.0
13.0
14.0
5.5
5.0
T
amb
= 0 to + 70°C
V
CC
= Min to Max
MIN
0.05
5.0
5.0
1.5
1.5
4.0
2.0
5.0
1.5
4.0
4.0
2.0
2.0
3.0
3.0
2.0
2.0
MAX
0.4
19.5
20.0
9.5
9.0
20.0
11.0
20.0
9.0
20.0
20.0
14.5
14.0
14.5
16.0
6.0
5.5
V/ns
ns
ns
ns
ns
ns
ns
ns
ns
UNIT
1995 Nov 10
4
Philips Semiconductors
Product specification
3.3V Parallel printer interface transceiver/buffer
74LVC1284
AC WAVEFORMS
V
M
= 1.5V
V
X
= V
OL
"0.3V
V
Y
= V
OH
–0.3V
V
OL
and V
OH
are the typical output voltage drops that occur with the
output load. (V
CC
never goes below 3.0V).
V = 2.7V
INPUTS
GND
2.4V
INPUT
1.4V
1.4V
0.4V
V
M
t
PHL
V
OH
OUTPUTS
V
OL
V
M
t
PLH
t
PLH
OUTPUT
t
PHL
V
OUT
1.4V
V
OUT
–1.4V
SY00001
SY00008
Waveform 1. Input Bn to output An propagation delays
Waveform 3. Voltage Waveforms Propagation Delay Times
(A To B) Measured at Output Pin
2.4V
DIR
to A
V
M
t
PLZ
DIR
to B
V
M
OUTPUT
HD
to B
V
CC
OUTPUT
LOW-to-OFF
OFF-to-LOW
V
OL
t
PHZ
V
OH
OUTPUT
HIGH-to-OFF
OFF-to-HIGH
GND
outputs
enabled
V
Y
V
M
outputs
disabled
outputs
enabled
0.4V
t1 t2
V
M
t1 t2
t
PZL
INPUT
0.4V
0.9V
2.4V
1.9V
SY00007
V
M
V
X
t
PZH
Waveform 4. Slew Rate Waveforms Voltage Waveforms
(Input pulse rise and fall time are 3ns, 150ns
t
pulse width
t10
µs,
for both a Low to High and a High to Low transition.)
Slew Rate measured between 0.4V and 0.9V - rising.
Slew Rate measured between 2.4V and 1.9V - falling.
Slew Rate measured at TP1.
SY00002
Waveform 2. 3-State enable and disable times
1995 Nov 10
5
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